1. Shaping and manipulating minds. Eg, show healthy, educational, intellectual content to Chinese users, and unhealthy, addictive, emotional, short-attention-span-inducing content in US and foreign markets (already happening [1]).

2. Train AI that can be used for analyzing and further manipulating foreign publics, or for providing strategic insight into political and election dynamics, making political and election interference operations more effective.

3. Collate data on individuals gained from TikTok with other sources like credit ratings agency breaches, OPM, etc. for their entire life, to create a continually growing lifetime data profile on every American, European, Asian, South American, African, etc. which may be used for pressure, coercion, or manipulation operations or similar. Think of it as "customer lifetime value" [2] for political purposes.

None of which we want an adversarial, totalitarian foreign power to be doing to us.

[0]:https://news.ycombinator.com/item?id=33657429

[1]:https://www.cbsnews.com/news/tristan-harris-social-media-pol...

[2]:https://en.wikipedia.org/wiki/Customer_lifetime_value